Jack



Jufiy 31 1924. 1499,???

1 .1. L. HICKEY JACK Filed Dec. 11 1922 2 sheet e 1 .INVENTOR- 1 J. L.HICKEY 4 v JACK Filed Dec; 11, 1922 2 Sheets-Sheet 2 Patented July 1,1924.

UNETEE STATES meant.

Parametric-a JAMES L. HICKEY, OF MILWAUKEE, WISCONSIN.

max.

Application filed December device of this character designed to beserv-- iceable as an ordinary jack and also for nipping purposes as usedin railroad construction work for the purpose of holding a tie up to therail until it is spiked.

Another object of my invention is to pro- I vide means for lifting orlowering objects having provision for pulling out spikes and also havingprovision for getting readily under heavy objects lying close to theound.

vA still further object of my invention is to provide a combined orinterchangeable jack and nipper such as may be used. advantageously inconnection with moving heavy machinery, riggers, pile drivers operation,erectors and other heavy objects, and in all cases where theconventional lifting jack in use will not get under anything close tothe ground.

A still further object of my invention is to provide a device easily andsimply constructed and assembled in position designed to accelerate thedownward movement of the weight lifting part or parts of my invention sothat gravity may be effective to provide a quicker means of moving thelifting part or parts than the mechanical means emloyed in my invention.

"With the above and other objects in view my invention consists in thecombination, ar-

rangement and details of construction disclosed 1n the drawlngs andspecificatlon,

and then more particularly pointed out in the appended claims.

In the drawings, wherein similar reference numerals designate similarparts throughout the several views,

Figure 1 is an end elevation of my invention, I

Figure 2 is a front elevation thereof, Figure 3 is a top plan viewthereof, Figure 4: is a' cross-sectional view therethru,

11, 1922. Serial No. 606,326.

Figure 5 is a view in elevation of my invention, partly in section,

Figure 6 is another end elevation of my invention, Figure 7 is a viewsimilar to Figure 6 but showing the rail shifters to be described inoperative position,

Figure 8 is a fragmental vertical eleva tion, partly in section,

Figure 9 is a fragmental detail view partly in section showing the pawlsin engagement with the racks,

Figure 10 is an end described,

- Figure 9? is a view similar to Figure 9 but sholiving the pawlsdisengaged from the rac v Figure 11 is a fragmental sectional viewshowing the dovetailed connection between upright and shifter, and;

view of a pivot ,to be Figure 12 is a fragmenttl'l detail View of aplatform shank. Referring to the drawings which are merely illustrativeof my invention 1 designates a base support for a frame consisting ofthe parallel oppositely-arranged uprights 4: and -5 having a strutconnection at 2 and, 3 respectively, with said base support 1. Theopposite outer edges ofthe uprights are provided with jagged surfaces orteeth forming thereby longitudinal racks 5, it being noticed that therack teeth on one edge of an upright are disposed in staggered relationwith respec to those on the opposite edge. The inner sides of theuprights carry the tracks or longitudh nal rails 6 and 7 upon whichslidably straddle the slides 8 and 9 formed with outwardly projectingpivots 10 and 11 which are cylindrical in outline, the terminals ofwhich pivots 12 and 13 being polygonalkin shape. Before the uprights 1and 5 are secured to the base support 1 one slide 8 is placed inposition to slhle upon one rail say, 8; a block forming part of amovable carriage or platform support and designated 19 has a lateralopening (not'designated) into which partly projects one pivot, say 10 sothat terminal 12 of this pivot protrudes centrally in opening 14 formedin a shank 15 carrying on its upper end a platform17, this shank 15projecting thru a relatively long slot 16 formedceiitrally in the block19; now the other polygonal terminal 13 of pivot 1-1 is next insertedinto opening 14.- of shank 15.

be seen that shank 15 is positioned in an upright manner in vertical orlongitudinal alinement-with slides 8 and 9, so as to insurea Strictlyvertical movement of this platform'support or carrying shank 15 at alltimes. The jack head or platform 17 comes 2 to rest upon the top beam 18connecting the upper edges of uprights 4 and 5, and it is deadapted toserve as a spike puller. The opposite end. of the block may be made invariousshapes as may be best found suitable in ordinary practice. It isdesigned to provide a handle 20 of suitable length and.

curvature as a means of giving the proper leverage to the block 19; thehandle is shown by way of illustration as made in one piece with theblock althoit is within the range of my variable construction to form asleeveupon the block and let the handle fit therein. These andotherchanges are intended to be covered. A pair of U-shaped pawls orbails are provided to ride upon the racks. .One bail consists of the rod24 having the outwardly converging limbs 25, 26 connecting thetransverse rung 27 which is pivoted at one end of the block 19. Theother bail is similarly shaped having the rod 24 with converging limbs25, 26 ending in the transverse rung 27 pivoted to the opposite end ofblock 19. .The rods 24, 24' are preferably made longer than rods orrungs 27, 27 and these rods 27, 27 are the parts that enter successivelythe teeth of the racks 5, being held yieldably and slidably within thesenotches or racks 5 under influence of contractile springs 28 and 29 theends of which are attached directly to the rods 24, 24 of bails, itbeing also noticed that one bail is preferably made slightly longer thanthe other and so that when either rod 24, or 24 of either bail is withinone notch of the rack the other is within the nexthigher notch instaggered relation to the first notch. The bails also convergeclownwardly in the direction of the racks, and the block is inhorizontal position when the bails occupy the position shown in Figure5. Now by taking hold of the actuating handle 20 on the block 19 andraising the same this act will also raise the bail having the rod 24 asshown in dotted lines in Figure 5, the other bail having the rod 24'serving as a prop to allow such raising of the first-named bail. Theaction of springs 28 and 29 is to draw both bails forcibly against thenotches 5 so as soon as the ball has been raised sufliciently high itautomatically springs or snaps into another notch 5'; now this bail.thus positioned acts as a prop for the other bail and this time thehandle I is taken hold of and swung downwardly so as to raise the bailhaving the rod 24' which will automatically take into the next highernotch and in this manner the platform andblock will both be raised orlowered accordingly as the handle is moved upwardly or downwardly, andin this manner a pawl and ratchet or pawl and rack mechanism is hadwhereby a step by step movement is their outer longitudinal edgeswillclear the.

inner parts of notches or rack teeth 51, 51. There is a shaft 32suitably mounted in upright 4 andcarries a two-lobed'cam 33 the lobes'ofwhich are out of engagement with the shifters when the rails 30, 31 areout of engagement with the pawls or bails. A crank handle 34 turns theshaft 32 and brings the lobes of cam 33 into a gradually reachinghorizontal position and this cam will at the same time spread 'out therails I 30, 31 which ride in the grooves 37 so the outer edges of theserails force rods 24, 24' of the bails out of the notches and allow theserods to slide down the outer edges of the rails 30, 31 so gravity mayaccelerate the downward movement of the carriage with platform 17 andclaw 22. The rails 30, 31 move'against the bails in spreading outrelation against the tension of springs 35 so by bringing the crank backto its normal horizontal position the springs 35 will pull back rails30, 31 and allow the bails to'automatically reenter the notches of theracks. The claw 22 of course serves as a nipper for elevating heavyworkand is, optional and may be omitted and the platform 17 goes underany object just like an ordinary jack. The notch 23 in claw 22 willallow a spike being held therein in the act of ejecting same.

All modifications within scope of claims are claimed herein.

WVhat I desire to claim and secure by Letters Patent is 1. A jackcomprising a base and two opposed substantially vertical "uprights,parallel vertical guides on the inner faces of said uprights, each ofsaid uprights having ratchet teeth projecting from its opposite J. L.HICKEY 4 v JACK Filed Dec; 11, 1922 2 Sheets-Sheet 2 !1/JEEEEEBY W l%/B5 jam INVENTOR

